Question

You came to know that the Diamond is a hardest material and it is a non-metal and similarly Mercury is a soft material and it is a metal.Write down the questions raised in your mind.

Answer 1

1. Are all metals hard? 

2. Are there any non-metals hard like diamond? 

3. Are there any metals soft like mercury? 

4. What makes mercury so soft and diamond so hard? 

5. Can we distinguish those metals and non-metals depending on their opposite properties like these examples?